Articulated car



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J: CHRISTIANSEN ART ICULATED CAR Filed May 9, 1954 5 Sheets-Sheet 2 4IN'VIENIiORS M07222 Cfirzsizansm ATTORNEY Aprillv, WBfi. .11,CHRISTIANSEN ART I CULATED CAR Filed May 9, 1934 INVENTOREB (221m 6%rwf'mmswz ATTORNEY 3 Sheets-Sheet I5 Patented Apr. 7, 1936 trial) STATESPATENT OFFICE ARTICULATED CAR Application May 9, 1934, Serial No.724,650

8 Claims.

This invention relates to articulated cars; namely, that type in whichthe adjacent end portions of two car bodies are supported by a singletruck, the latter being known in the art as a pivot truck, and thisinvention contemplates certain improvements in the construction shown inpatent to A. W. Clarke, Number 1,879,093, September 27, 1932.

One object of this invention is the provision of a connection for theadjacent end portions of adjacent bodies of an articulated car whichwill maintain the end portions in their proper relative positions and,at the same time, permit the bodies to turn or pivot relative to eachother when rounding curves.

Another object of this invention is the provision of a truck forsupporting the adjacent end portions of adjacent railway car bodies,said truck including a pair of truck bolsters each of which is' adaptedto support the end portion of one car body, the truck also including atransom arranged intermediate the bolsters and provided with a castingmounted thereon in such a manner as to be longitudinally movable withrespect thereto upon relative movement of the adjacent end portions ofadjacent car bodies, the latter being provided with adjacently arrangedinterconnected body connection castings which project into the truckcentering casting.

A further object of this invention is the provision of new and improvedside bearing means for supporting the adjacent end portions of adjacentcar bodies against excessive rocking movement.

This invention also contemplates the provision of new and improved meansfor connecting the adjacent end portions of adjacentcar bodies to arailway car truck.

Other objects and advantages of this invention will be apparent from thefollowing description taken in conjunction with the accompanyingdrawings, in'which Figure 1 is a top plan view of the end portions ofadjacent car bodies, certain parts being shown in section, other partsbeing broken away, and still other parts being omitted in order to moreclearly show the invention;

Fig. 2 is a longitudinal sectional view through the articulated joint;

Fig. 3 is a sectional view taken on the line 3-3, Fig. 2.

Referring now more particularly to the drawings in which similarcharacters of reference designate similar parts in the several views,the adjacent end portions of two car, bodies are shown at A and B, thebodies having an underframe which includes center sills 2 and an endsill of any preferred or desired construction.

The adjacent ends of the car bodies are provided with doorways framed bychannels 4, one 5 flange of each of the channels being extended beyondthe car endto define an attaching means 6 for a flexible diaphragm 8, asshown clearly in Fig. 1, said diaphragm defining a closed passagewaybetween the adjacent bodies A and B, 10

The bolsters extend between the side frames l2 of the truck and aresupported by springs l4 positioned in spring seats I5 carried by aspring plank [6. The spring seats l5 are through the medium of swinglinks I8 pivotally mounted on a pin 20 supported in brackets 22 securedas by rivets 24 to the upper surfaces of outside transoms 26; thebrackets 22 constituting parts of attaching castings 30 which aresecured as by rivets 32 to the upper portions of the side frames l2 ofthe truck as clearly shown in Figs. 1 and 3. The beforementioned outertransoms 26, as shown more clearly in Fig. 2, are pressings ofsubstantially channel shape as shown clearly in Fig. 2, and they arearranged respectively adjacent the outer side walls of the bolsters In.Between the bolsters I0 is a center transom 34 of substantially I-beamshape secured to the side frames 1 2 by attaching castings 35 36 (seeFigs. 1 and 3) said attaching castings 36 being provided with bearings38 through which or between which the beforementioned pins 20 extend asshown also in said Figs. 1 and 3.

From the description above it can be seen that 40 the construction ofthe present invention includes a side frame having a pair of independentspaced lateral motion bolsters II] and between said bolsters a transomis arranged and adjacent the opposite side walls of the bolsters aretransoms 45 termed outer transoms. The pin 2|] is supported by theseveral transoms 26 and 34 and, at the center transoms 34 the pinsupports swing links indicated at 40, see Figs. 1 and 2, the links [8and 40 supporting the stirrups 4| by which spring 50 and said wear plateis adapted to slidably sup- 55 portion 15 supported 20 port a truckcenter casting 48, the latter comprising a socketed body portion havingoppositely arranged flanges 52 depending therefrom with the lowerportions thereof inturned to constitute flanges 5 underlying the sideedge portions of the wear plate 46. From this description it will beapparent that the truck center casting is mounted for sliding movementon transom 34.

Each bolster i6 is provided with a bearing 56 secured to its uppersurface, said bearings each being generally arcuate in form as shownmore clearly in Fig. 1 and being adapted to receive segmental bodybearings 58 depending from the end portions of the respective carbodies. In the instance shown the body bearings are formed integral withthe bottom walls 59 of body connection castings indicated generally at Dand which are secured to and form parts of the body underframes. Theseconnection castings D are generally of the form shown in thebeforementioned patent to Clarke 1,879,093 but differ from theconstruction shown in the Clarke patent in providing wear plates 69 attheir forward end portions. The castings D at their front end portionsare provided with depending arcuate projections 62 which extend into thebeforementioned truck center casting 50 and, as shown clearly in Fig. 2,the projections are interconnected through a tongue and groovearrangement illustrated at 6 3 and 66 respectively; this in accordancewith the disclosure in the beforementioned Clarke patent and resultingin a construction in which the car bodies are restrained againstrelative vertical shifting though permitting required relative rotativemovement.

Secured to the car bodies and depending therefrom as shown clearly inFig. 3 are body side bearings 68 having wear plates 10 secured to thelower surfaces thereof adapted to cooperate with wear plates l2 formingparts of truck side bearings illustrated generally at M and constitutingintegral upstanding parts formed at the end portions of the truckbolsters [0. The body side bearings 68 are hollow as shown at 16 andconstitute reservoirs holding a suitable lubricant which is adapted tolubricate the cooperating surfaces of wear plates 10 and 12, thelubricant being adapted to pass to these cooperating surfaces throughopenings 18 formed in the body side bearings. To introduce lubricantinto the side bearings 68 feed openings 13 are provided which arenormally closed by plugs 15.

The bolsters ll], as more clearly shown in side elevation in Fig. 3, areprovided with a raised portion 80 intermediate the ends thereof on whichthe bearings 56 are mounted and said bolsters slope sharply downwardlyfrom the raised portion 88 as shown at 82'and then upwardly to form thetruck side bearings 14; this downwardly inclined portion providing aspace for receiving the pins 26 supporting the swing links l8 and 6E3.

Extending between adjacent car bodies is a foot plate 84 supported bybrackets 86, Z-shaped in cross section and resting upon end top coverplates 88 secured to the castings D. Clips 9|] are secured to the coverplates 88 and overlap the lower flange of the Z-shaped bracket 86 toretain the bracket and foot plate 84 against displacement. Secured tothe adjacent end portions of the car bodies, as clearly shown in Figs. 1and 2, are tread castings 89, substantially Z-shaped in cross section,the upper flanges 91 of which overlap the marginal edge portion of thefoot plate 84.

In service, with the parts arranged as shown in Fig. 2, the body A ispermitted to swivel relative to body B due to the engagement of the bodyconnection casting with the bearing 56 on bolster ll]. Should trackcurvature be such as to necessitate a horizontal shifting movement ofthe interengaged body connection castings relative to the truck it willbe obvious that this is permitted due to the sliding connection of thecenter casting 48 with the transom 34 on which said casting is mounted.Sidewise tilting of the car bodies relative to the truck is limited bythe new and improved design of side bearing arrangement as shown in Fig.3.

The drawings show certain embodiments of this invention but it is to beunderstood they are for illustrative purposes only and various changesin the form and proportions of the construction may be made within thescope of the appended claims without departing from the spirit of theinvention.

' What is claimed is:

1. In an articulated car, a pair of car bodies arranged end to end, atruck for supporting the adjacent end portions of said bodies, and meansfor connecting said bodies and truck comprising a laterally shiftablepivot between said end portions, a pair of lateral motion bolsters eacharranged beneath one end portion of one of said bodies, an interengagedbody and truck bearing between said end portions and bolsters adapted topermit horizontal swiveling movement of the bodies in a confined path,said pivot being the center of swiveling movement.

2. In an articulated car, a pair of car bodies arranged substantiallyend to end, a truck for supporting the adjacent end portions of saidbodies, and means for connecting said bodies and truck comprising apivot between said end portions, means on which said pivot is mountedfor shifting movement transversely of the truck, a pair of lateralmotion bolsters each arranged beneath one end portion of one of saidbodies, bearings between said end portions and bolsters adapted topermit horizontal shifting movement of the car ends, said pivot beingthe center of rotation regardless of its position, and inter-engagedprojections on the car end portions for preventing excessive relativevertical shifting of said end portions.

3. In an articulated car, a pair of car bodies arranged end to end, atruck for supporting the adjacent end portions of said bodies, a pair ofspaced lateral motion truck bolsters, a transom rigidly secured to thetruck and arranged between said bolsters, a socketed truck centercasting slidably mounted on said transom, means restraining said centercasting against vertical movement relative to the transom, bearingsbetween the end portions and bolsters so formed as to permit horizontalrotation of the car end portions, said truck center casting constitutingthe center of rotation, and inter-engaging projections on the car endportions extended into the truck center casting and adapted to preventexcessive relative vertical shifting of the car bodies.

4. In an articulated car, a pair of car bodies arranged end to end andprovided with contiguously arranged bumng surfaces, the adjacent endportions of said bodies having vertically depending pivot elementsarranged in inter-engaged relation, and a truck center casting supportedfor independent transverse movement relative to the truck into whichsaid pivot elements extend.

5. In an articulated car, a pair of car bodies arranged end to end, atruck for supporting said car bodies and provided with a pair of spacedlateral motion bolsters, body connection castings for said car bodies,bearings between said connection castings and bolsters adapted to permithorizontal rotation of the car end portions, a truck center castingslidably mounted between the bolsters, and inter-engaged projectionsdepending from the body connection castings and arranged in the truckcenter castings.

6. In an articulated car, a pair of car bodies arranged end to end, atruck for supporting the adjacent end portions of said car bodies andprovided with a pair of spaced lateral motion bolsters, body connectioncastings secured to the adjacent end portions of said bodies,interengaged body and truck bearings between said end portions andbolsters adapted to permit horizontal swiveling movement of the bodiesin a confined path, a truck transom intermediate the bolsters, a truckcenter casting slidably supported on said transom, projections dependingfrom the body connection castings and extended into the truck centercasting, said projections being relatively so formed as to preventexcessive relative vertical movement of the car bodies, truck sidebearing elements formed integral with the bolsters at opposite endportions thereof, and lubricant holding body side bearings secured tothe car bodies and adapted to cooperate with the truck side bearings toprevent excessive rocking movement of the bodies relative to the truck,said body side bearings being provided with means permitting passage oflubricant from the body side bearings to the contacting surfaces of thebody and truck side bearings.

7. In an articulated car, a plurality of car bodies, a truck forsupporting the adjacent end portions of said bodies, said truck beingprovided. with a pair of independent lateral motion bolsters by whichthe car bodies are respectively supported, body connection castingssecured to the adjacent end portions of said bodies, projectionsdepending from said castings, and a truck center casting arrangedintermediate the bolsters and with which the depending projectionscooperate, said truck center casting being slidably supported whereby tobe capable of shifting movement upon variation in the positions of thebolsters.

8. In an articulated car, a plurality of car bodies, a truck forsupporting the adjacent end portions of said bodies, said truck beingprovided with a pair of independent lateral motion bolsters by which thecar bodies are respectively supported, body connection castings securedto the adjacent end portions of said bodies, projections depending fromsaid castings, a truck transom arranged intermediate the bolsters, and atruck center casting with which the depending portions cooperateslidably mounted on said transom whereby to be capable of lateralshifting movement upon variation in the positions of the bolsters.

JOHN CHRISTIANSEN.

